| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.lucene.index; |
| |
| import java.io.IOException; |
| import java.util.stream.Collectors; |
| import java.util.stream.IntStream; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.document.TextField; |
| import org.apache.lucene.search.CollectionStatistics; |
| import org.apache.lucene.search.TermStatistics; |
| import org.apache.lucene.search.similarities.ClassicSimilarity; |
| import org.apache.lucene.search.similarities.PerFieldSimilarityWrapper; |
| import org.apache.lucene.search.similarities.Similarity; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LineFileDocs; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util.TestUtil; |
| |
| /** |
| * |
| */ |
| public class TestCustomNorms extends LuceneTestCase { |
| static final String FLOAT_TEST_FIELD = "normsTestFloat"; |
| static final String EXCEPTION_TEST_FIELD = "normsTestExcp"; |
| |
| public void testFloatNorms() throws IOException { |
| |
| Directory dir = newDirectory(); |
| MockAnalyzer analyzer = new MockAnalyzer(random()); |
| analyzer.setMaxTokenLength(TestUtil.nextInt(random(), 2, IndexWriter.MAX_TERM_LENGTH)); |
| |
| IndexWriterConfig config = newIndexWriterConfig(analyzer); |
| Similarity provider = new MySimProvider(); |
| config.setSimilarity(provider); |
| RandomIndexWriter writer = new RandomIndexWriter(random(), dir, config); |
| final LineFileDocs docs = new LineFileDocs(random()); |
| int num = atLeast(100); |
| for (int i = 0; i < num; i++) { |
| Document doc = docs.nextDoc(); |
| int boost = TestUtil.nextInt(random(), 1, 10); |
| String value = IntStream.range(0, boost).mapToObj(k -> Integer.toString(boost)).collect(Collectors.joining(" ")); |
| Field f = new TextField(FLOAT_TEST_FIELD, value, Field.Store.YES); |
| |
| doc.add(f); |
| writer.addDocument(doc); |
| doc.removeField(FLOAT_TEST_FIELD); |
| if (rarely()) { |
| writer.commit(); |
| } |
| } |
| writer.commit(); |
| writer.close(); |
| DirectoryReader open = DirectoryReader.open(dir); |
| NumericDocValues norms = MultiDocValues.getNormValues(open, FLOAT_TEST_FIELD); |
| assertNotNull(norms); |
| for (int i = 0; i < open.maxDoc(); i++) { |
| Document document = open.document(i); |
| int expected = Integer.parseInt(document.get(FLOAT_TEST_FIELD).split(" ")[0]); |
| assertEquals(i, norms.nextDoc()); |
| assertEquals(expected, norms.longValue()); |
| } |
| open.close(); |
| dir.close(); |
| docs.close(); |
| } |
| |
| public class MySimProvider extends PerFieldSimilarityWrapper { |
| Similarity delegate = new ClassicSimilarity(); |
| |
| @Override |
| public Similarity get(String field) { |
| if (FLOAT_TEST_FIELD.equals(field)) { |
| return new FloatEncodingBoostSimilarity(); |
| } else { |
| return delegate; |
| } |
| } |
| } |
| |
| public static class FloatEncodingBoostSimilarity extends Similarity { |
| |
| @Override |
| public long computeNorm(FieldInvertState state) { |
| return state.getLength(); |
| } |
| |
| @Override |
| public SimScorer scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats) { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |